The D. A. Hurd Library has many local resources including cemetery records, Annual Reports, and the York County Census of 1800,1810, and 1820. We also have a wonderful Maine collection.
The Maine State Library is a great place to get started! They have many resources for the beginner as well as the seasoned genealogist. Their genealogy collection primarily emphasizes Maine, but also has good coverage of Massachusetts and New Hampshire. They have additional resources on other parts of New England and the Quebec Province and the Maritimes.
Through the Maine State Library link above you can access Ancestry Library Edition (use is ONLY from within a public library) and HeritageQuest.